{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-17T05:35:58.500035+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"operator":{"type":"operator","id":"0161193","name":"Eurovia Atlantic Coast LLC"},"controller":{"type":"controller","id":"0145321","name":"VINCI Group"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00042","name":"Lane Industries Inc"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|M00042|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07343","name":"Northfield Washed Sand & Gravel Company Inc"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|L07343|1950-01-01|1984-08-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05847","name":"Domenic J Ferrante"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|M05847|1950-01-01|1984-08-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05847","name":"Domenic J Ferrante"},"object":{"type":"operator","id":"L07343","name":"Northfield Washed Sand & Gravel Company Inc"},"validFrom":"1950-01-01","validTo":"1984-08-06","current":false,"derived":true,"evidenceMineId":"1900348","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|L07343|1950-01-01|M05847|1950-01-01|135604"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00092","name":"Lane Construction Corporation"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"1984-08-07","validTo":"2018-12-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|L00092|1984-08-07|2018-12-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00042","name":"Lane Industries Inc"},"object":{"type":"operator","id":"L00092","name":"Lane Construction Corporation"},"validFrom":"1984-08-07","validTo":"2018-12-11","current":false,"derived":true,"evidenceMineId":"1900348","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|L00092|1984-08-07|M00042|1950-01-01|102475"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0161193","name":"Eurovia Atlantic Coast LLC"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"2018-12-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|0161193|2018-12-12|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0145321","name":"VINCI Group"},"object":{"type":"mine","id":"1900348","name":"Northfield Plant #38"},"validFrom":"2018-12-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|0145321|2018-12-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0145321","name":"VINCI Group"},"object":{"type":"operator","id":"0161193","name":"Eurovia Atlantic Coast LLC"},"validFrom":"2018-12-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"1900348","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900348|0161193|2018-12-12|0145321|2018-12-12|29751"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1900348","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}